<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      let arr = [1, 3, 5, 7, 9]
      let arr1 = [2,6,4]
      function getOddAve(a) {
        let sum = 0
        for (let i = 0; i < a.length; i++) {
          if (a[i] % 2 !== 0) {
            // console.log(a[i]);
            sum += a[i]            
          }
        }
        return sum / a.length
        // return sum
        return 0
      }
      console.log(getOddAve(arr))
      console.log(getOddAve(arr1))
    </script>
  </body>
</html>
